Device for eestoking to shape the



Feb. 15, 1949. T. R. NEUTELINGS 2,461,839

E TORING TO SHAPE T WALLS OF DEFORMED DEVICE FOR S T METAL BO AND IR LIDS Filed Ap i 7, 1959 Patented Feb. 15, 1949 a 2,461,839r v DEVICE" FORT RESTORING TOT, SHAPE WALLS" OF DEFORMEU- SHEET-'METAH BOXES AND THEIR LIDS TheodoonReinier Neutelings, Bergen.-op-Z oom,.i Netherlands; Application April '1; 1939;"Serial Nbg- 2665931 I In Belgium Apri1,12j,= 1938.

Sections .3

The invention relates'to a method and also to a device for restoring-to shape the walls ofdeformed'sheet-metal boxes andtheirlids, where'- by this work may be performed easily and at low costs.

.The method, according to the invention, con-- sists in'placing inside the boxes andlids a numher of profiling blocks presenting; at their assembled outer periphery, nearly'the peripheral shape of. a box ,to be reshaped; subsequentlyforcing these profiling blocks apart from each' other, after which a sleeve or frame, the'inner periphery of which corresponds, to the normal outer Peripheryof, thebox, is slid along the reshaped box; to completely flatten the Walls thereof 1 A1 devicefor carrying .out the method accord ing to they inventionis characterized in that a number ofprofiling blocks are so arranged with respect to, eachother and are so shaped that eliminating such volumetricdeformation by shrinking" the' area ofthe "walls ;of the box or thelid, so as toreduce the'dimensions of'said walls;

' "The. shrinking" effect is obtained by stamping ribs or the like-irregularities in" said walls; and for this purpose use canbe made upon the aforementioned device of press-plates having die .surfaces cooperating with outerdie surf acesgprovided on the profiling blocks. 1

The invention will be described hereafter with reference to the accompanying drawing, in which and 10, Public Law B90,'"August i8 1946f Patent expires April 12,1958

6 Claims; (Cl. 153%32):

inner sides of this-supporting'frame 5 are mountedfour horizontal rollers 6"; which are m'ovab-le inthe direction of the profiling-"blocks; said rollersbeingpermanently under" the action of 'pressur'e springs L Above-- the profiling blocks-Ideal rangeda press-plated; the underface ofwhichpresents theerequired irregularities "which; in co operation with die-shaped surfaces of theprofil ing'blo-ck's; will stamp the' necessary ribs in the bottom wall ofthe box'or'thelid for the purpose of shrinking said wall. The supporting-framed is axially movable wlth respect to the-profiling;

blocks; whereby' said frame slides along guiding columns 9%" -A verticallyreciprocating movement is obviously "impartedto the-press-plate 8 with respect to the-profil-ingblocks;

Similarly; tHe"side"wa'l1s of-the box orthe -1id may have their area shrunkby-stamping-ribs therein-by means'of die-plates 8 cooperatingwith the -shaped'sidesof "the profiling-j blocks.

When the profiling blocks 2,- after introduction] of the 'wedge' element' 3; have been spread apart and the-walls of-"the sheet-metal box-4 have "thus been-stretched, the" pressure rollers 6* are slided by means of theirmovableframe 5 a-lcngthe side WaH'SfTOf the'box; whereby said si'de wallsbecome perfectly'fiattened. During this-"operation; the upper*press=plate 8" will be firmly pressed upon the bottom-wall of the-box or the top wall of the lid, so 'that'said'walls' will take the shape stamped" therein bythe cooperating surfaces of the "press plateiand' the'profilingblocks'. Said wall will be shrunlrandthe sidewalls may be-similarly shrunk by means of the plates 8", the'roll'er'frame ii -being" obviously" lifted atthe convenient heighti The degree QfLshrinking of"'thewalls*of the box-or the lid will be'deter-mined brexperience and in" relation with the ordinary; volumetric dimension of the box:

a form of embodiment of the device has been diagrammatically illustrated.

Fig. 1 is a front elevation partly in section of the device for restoring deformed boxes made of sheet-metal.

Fig. 2 is a plan view partially in section and having a top part removed for the purposeof clearness.

On the work-table l are arranged four profiling blocks 2 between which can be driven the wedge element 3. Over the profiling blocks 2 is-engaged the sheet-metal box to be restored to shape. Around the profiling blocks is arranged a supporting frame 5 formed in two parts. At the The box and the lid treated according to the invention will have recovered-its normal rectangular shape and can be efficiently reused for packing articles, such as biscuits and cakes,

I claim:

1. A device for reshaping sheet-metal boxes and the lids pertaining thereto comprising expansible core means the outer periphery of which is nearly equal to the peripheral shape of the box or lid to be reshaped and said core means being adapted to support said box or lid, and further comprising a supporting frame surrounding the core means and carrying rolls arranged to engage and to exert a pressure on the side walls of the box or lid mounted on the core means, the supporting frame with the rolls and the core 1 to each other and so shaped that their assembled outer periphery is nearly equal to the peripheral shape of the box or lid to be reshaped, said profiling blocks having a wedging plane at their sides facing each other, a wedge element adapted to be moved between the profiling blocks in engagement with the wedging planes thereof, a

' supporting frame surroundingthe profile blocks,

rolls mounted in said frame arranged to engage and to exert a pressure on the side walls of a box or lid mounted on the profile blocks, the supporting frame and the profiling blocks being slidably arranged with relation to each other.

3. A device for reshaping sheet-metal boxes and the lids pertaining thereto, comprising a number of profiling blocks so arranged with respect to each other and so shaped that their assembled outer periphery is nearly equal to the peripheral shape of the box or lid to be reshaped, said'profiling blocks having a wedging plane at their sides facing each other, a Wedge element adapted to be moved between the profiling blocks in engagement with the wedge planes thereof, a supporting frame surrounding the profile blocks, rolls mounted in said frame arranged to engage and to exert a pressure on the side walls of a box or lid mounted on the profile blocks, the supporting frame and the profilingblocks being slidably arranged with relation to each other, and a press-plate adapted to press the bottom wall of the box or the top wall of the lid against the adjacent side of the profile blocks.

4. A device for reshaping sheet-metal boxes and the lids pertaining thereto, comprising a number of profiling blocks so arranged with respect to each other and so shaped that their assembled outer peripheryis nearly equal to the peripheral shape of the box or lid to be reshaped, said profiling blocks having a Weldging plane at their sides facing each other, a wedge element adapted to be moved between the profiling blocks in engagement with the wedging planes thereof, a supporting frame surrounding the profile blocks, rolls mounted in said-frame arranged to engage and to exert a pressure on the side walls of a box or lid mounted on the profile blocks, the supporting frame and the profiling blocks being slidably arranged with relation to each other, and a press-plate adapted to stamp ribs in the bottom wall of the box or the top'wall of the lid, the adjacent side of the profiling blocks and of the pressure plate forming dies for this purpose.

5; A device for reshaping sheet-metal boxes 4 and the lids pertaining thereto, comprising a number of profiling blocks so arranged with respect to each other and so shaped-that their assembled outer peripheryisnearly equal to the peripheral shape of the box to be reshaped, said profiling blocks having a wedging plane. at their sides facing each other, a wedge element adapted to be moved between the profiling blocks in engagement with the wedging planes thereof, a supporting frame surrounding the profiling blocks, spring pressed rolls mounted in said frame arranged to engage and to exert a pressure on the side walls of the box or lid mounted on the profiling blocks, the supporting .frame and the profiling blocks being slidably arranged with relation to each other, and a press-plate adapted to press the bottom wall of the box or the top wall of the lid against the adjacent side of the profiling blocks.

6. A device for reshaping sheet-metal boxes and the lids pertaining thereto, comprising a number of profiling blocks so arranged with respect to each other and so shaped that their assembled outer periphery is nearly equal to the peripheral shape of the box to be reshaped, said profiling blocks having a wedging plane at their sides facing each other, a Wedge element adapted to be moved between the profiling blocks in engagement with the wedging planes thereof, a supporting frame surrounding the profiling blocks, spring pressed rolls mounted in said frame arranged to engage and to exert a pressure on a box or lid mounted on the profiling blocks, the supporting frame and the profiling blocks being slidably arranged with relation to each other, and press-plates adapted to stamp ribs in the walls of the box or the lid to be reshaped, the adjacent sides of the profiling blocks and of the pressure plates forming dies for this purpose.

THEODOOR REINIER NEUTELTNGS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 517,738 Edgar et al Apr. 3, 1894 1,113,196 Conover Oct. 13, 1914 1,457,579 Kranz June 5, 1923 1,468,549 Wootten Sept. 18, 1923 1,857,628 Eisenlohr May 10, 1932 2,163,715 Stull June 27, 1939 FOREIGN PATENTS Number Country Date 13,495 Great Britain Sept. 9, 1909 

